BOTANICAL GAZETTE. 167 
1888. | 
389 genera, and 155 pteridophytes with 30 genera, making a total of 
_- species. It is believed that 115 of these species have been introduced since 
the discovery by Captain Cook in 1779, and 24 species by the natives in pre- 
historic times. This leaves 860 species as original inhabitants, of which 
‘no less than 658 are endemic, or over 75 per cent. Of this 653 endemic 
_- Species 250 belong to endemic genera. Considering dicotyledons alone, 
over 85 per cent. of their species are endemic. This character is strik- 
ingly shown in Lobeliaceze, of which 58 species are known, all endemic, 
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the volume abounds in new species, and illustrates in every page the fact 
that it deals with a long isolated flora. 
The geological history of plants.’ . 
It had been known for some time that a work was being prepared 
vegetation, and its appearance was anxiously looked forward to, in hope 
that we should at last have an American work, illustrated by American 
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. more than thirty-five hundred feet. The oldest unquestionable plant 
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OWS of w pean scientists, must probably represent the tracks or bu 
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New York: D, Appleton & Co. 1888. 
woody. This volume describes 844 species of phanerogams, representing 
- belonging to 6 genera, 5 of which are endemic. It is needless to say that 
by Sir William Dawson on the geological history and development of 
orms. Under this head he places the so-called genera Bilobites, 
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4 
Tm J. WILLiaM.—The Geological History of Plants. Vol. LXI, Internat. Sci. 
